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freebsd-skq/sys/powerpc/powermac/macio.c
Justin Hibbits bfed756af6 Sprinkle EARLY_DRIVER_MODULE around the tree 
Mark some buses as BUS_PASS_BUS, and some resources as BUS_PASS_RESOURCE.
This also decouples some resource attachment orderings from being races by
device tree ordering, instead relying on the bus pass to provide the
ordering.

This was originally intended to support multipass suspend/resume, but it's
also needed on PowerMacs when using fdt, as the device tree seems to get
created in reverse of the OFW tree.
Reviewed by:	nwhitehorn (long ago)
Differential Revision:	https://reviews.freebsd.org/D918
2018-12-04 04:55:49 +00:00

708 lines
19 KiB
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/*-
* SPDX-License-Identifier: BSD-3-Clause
*
* Copyright 2002 by Peter Grehan. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*/
/*
* Driver for KeyLargo/Pangea, the MacPPC south bridge ASIC.
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/malloc.h>
#include <sys/module.h>
#include <sys/bus.h>
#include <sys/rman.h>
#include <vm/vm.h>
#include <vm/pmap.h>
#include <machine/bus.h>
#include <machine/intr_machdep.h>
#include <machine/resource.h>
#include <machine/vmparam.h>
#include <dev/ofw/ofw_bus.h>
#include <dev/ofw/ofw_bus_subr.h>
#include <dev/ofw/openfirm.h>
#include <powerpc/powermac/maciovar.h>
#include <dev/pci/pcivar.h>
#include <dev/pci/pcireg.h>
/*
* Macio softc
*/
struct macio_softc {
phandle_t sc_node;
vm_offset_t sc_base;
vm_offset_t sc_size;
struct rman sc_mem_rman;
/* FCR registers */
int sc_memrid;
struct resource *sc_memr;
};
static MALLOC_DEFINE(M_MACIO, "macio", "macio device information");
static int macio_probe(device_t);
static int macio_attach(device_t);
static int macio_print_child(device_t dev, device_t child);
static void macio_probe_nomatch(device_t, device_t);
static struct resource *macio_alloc_resource(device_t, device_t, int, int *,
rman_res_t, rman_res_t, rman_res_t,
u_int);
static int macio_activate_resource(device_t, device_t, int, int,
struct resource *);
static int macio_deactivate_resource(device_t, device_t, int, int,
struct resource *);
static int macio_release_resource(device_t, device_t, int, int,
struct resource *);
static struct resource_list *macio_get_resource_list (device_t, device_t);
static ofw_bus_get_devinfo_t macio_get_devinfo;
/*
* Bus interface definition
*/
static device_method_t macio_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, macio_probe),
DEVMETHOD(device_attach, macio_attach),
DEVMETHOD(device_detach, bus_generic_detach),
DEVMETHOD(device_shutdown, bus_generic_shutdown),
DEVMETHOD(device_suspend, bus_generic_suspend),
DEVMETHOD(device_resume, bus_generic_resume),
/* Bus interface */
DEVMETHOD(bus_print_child, macio_print_child),
DEVMETHOD(bus_probe_nomatch, macio_probe_nomatch),
DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
DEVMETHOD(bus_alloc_resource, macio_alloc_resource),
DEVMETHOD(bus_release_resource, macio_release_resource),
DEVMETHOD(bus_activate_resource, macio_activate_resource),
DEVMETHOD(bus_deactivate_resource, macio_deactivate_resource),
DEVMETHOD(bus_get_resource_list, macio_get_resource_list),
DEVMETHOD(bus_child_pnpinfo_str, ofw_bus_gen_child_pnpinfo_str),
/* ofw_bus interface */
DEVMETHOD(ofw_bus_get_devinfo, macio_get_devinfo),
DEVMETHOD(ofw_bus_get_compat, ofw_bus_gen_get_compat),
DEVMETHOD(ofw_bus_get_model, ofw_bus_gen_get_model),
DEVMETHOD(ofw_bus_get_name, ofw_bus_gen_get_name),
DEVMETHOD(ofw_bus_get_node, ofw_bus_gen_get_node),
DEVMETHOD(ofw_bus_get_type, ofw_bus_gen_get_type),
{ 0, 0 }
};
static driver_t macio_pci_driver = {
"macio",
macio_methods,
sizeof(struct macio_softc)
};
devclass_t macio_devclass;
EARLY_DRIVER_MODULE(macio, pci, macio_pci_driver, macio_devclass, 0, 0,
BUS_PASS_BUS);
/*
* PCI ID search table
*/
static struct macio_pci_dev {
u_int32_t mpd_devid;
char *mpd_desc;
} macio_pci_devlist[] = {
{ 0x0017106b, "Paddington I/O Controller" },
{ 0x0022106b, "KeyLargo I/O Controller" },
{ 0x0025106b, "Pangea I/O Controller" },
{ 0x003e106b, "Intrepid I/O Controller" },
{ 0x0041106b, "K2 KeyLargo I/O Controller" },
{ 0x004f106b, "Shasta I/O Controller" },
{ 0, NULL }
};
/*
* Devices to exclude from the probe
* XXX some of these may be required in the future...
*/
#define MACIO_QUIRK_IGNORE 0x00000001
#define MACIO_QUIRK_CHILD_HAS_INTR 0x00000002
#define MACIO_QUIRK_USE_CHILD_REG 0x00000004
struct macio_quirk_entry {
const char *mq_name;
int mq_quirks;
};
static struct macio_quirk_entry macio_quirks[] = {
{ "escc-legacy", MACIO_QUIRK_IGNORE },
{ "timer", MACIO_QUIRK_IGNORE },
{ "escc", MACIO_QUIRK_CHILD_HAS_INTR },
{ "i2s", MACIO_QUIRK_CHILD_HAS_INTR |
MACIO_QUIRK_USE_CHILD_REG },
{ NULL, 0 }
};
static int
macio_get_quirks(const char *name)
{
struct macio_quirk_entry *mqe;
for (mqe = macio_quirks; mqe->mq_name != NULL; mqe++)
if (strcmp(name, mqe->mq_name) == 0)
return (mqe->mq_quirks);
return (0);
}
/*
* Add an interrupt to the dev's resource list if present
*/
static void
macio_add_intr(phandle_t devnode, struct macio_devinfo *dinfo)
{
phandle_t iparent;
int *intr;
int i, nintr;
int icells;
if (dinfo->mdi_ninterrupts >= 6) {
printf("macio: device has more than 6 interrupts\n");
return;
}
nintr = OF_getprop_alloc_multi(devnode, "interrupts", sizeof(*intr),
(void **)&intr);
if (nintr == -1) {
nintr = OF_getprop_alloc_multi(devnode, "AAPL,interrupts",
sizeof(*intr), (void **)&intr);
if (nintr == -1)
return;
}
if (intr[0] == -1)
return;
if (OF_getprop(devnode, "interrupt-parent", &iparent, sizeof(iparent))
<= 0)
panic("Interrupt but no interrupt parent!\n");
if (OF_getprop(OF_node_from_xref(iparent), "#interrupt-cells", &icells,
sizeof(icells)) <= 0)
icells = 1;
for (i = 0; i < nintr; i+=icells) {
u_int irq = MAP_IRQ(iparent, intr[i]);
resource_list_add(&dinfo->mdi_resources, SYS_RES_IRQ,
dinfo->mdi_ninterrupts, irq, irq, 1);
dinfo->mdi_interrupts[dinfo->mdi_ninterrupts] = irq;
dinfo->mdi_ninterrupts++;
}
}
static void
macio_add_reg(phandle_t devnode, struct macio_devinfo *dinfo)
{
struct macio_reg *reg, *regp;
phandle_t child;
char buf[8];
int i, layout_id = 0, nreg, res;
nreg = OF_getprop_alloc_multi(devnode, "reg", sizeof(*reg), (void **)&reg);
if (nreg == -1)
return;
/*
* Some G5's have broken properties in the i2s-a area. If so we try
* to fix it. Right now we know of two different cases, one for
* sound layout-id 36 and the other one for sound layout-id 76.
* What is missing is the base address for the memory addresses.
* We take them from the parent node (i2s) and use the size
* information from the child.
*/
if (reg[0].mr_base == 0) {
child = OF_child(devnode);
while (child != 0) {
res = OF_getprop(child, "name", buf, sizeof(buf));
if (res > 0 && strcmp(buf, "sound") == 0)
break;
child = OF_peer(child);
}
res = OF_getprop(child, "layout-id", &layout_id,
sizeof(layout_id));
if (res > 0 && (layout_id == 36 || layout_id == 76)) {
res = OF_getprop_alloc_multi(OF_parent(devnode), "reg",
sizeof(*regp), (void **)&regp);
reg[0] = regp[0];
reg[1].mr_base = regp[1].mr_base;
reg[2].mr_base = regp[1].mr_base + reg[1].mr_size;
}
}
for (i = 0; i < nreg; i++) {
resource_list_add(&dinfo->mdi_resources, SYS_RES_MEMORY, i,
reg[i].mr_base, reg[i].mr_base + reg[i].mr_size,
reg[i].mr_size);
}
}
/*
* PCI probe
*/
static int
macio_probe(device_t dev)
{
int i;
u_int32_t devid;
devid = pci_get_devid(dev);
for (i = 0; macio_pci_devlist[i].mpd_desc != NULL; i++) {
if (devid == macio_pci_devlist[i].mpd_devid) {
device_set_desc(dev, macio_pci_devlist[i].mpd_desc);
return (0);
}
}
return (ENXIO);
}
/*
* PCI attach: scan Open Firmware child nodes, and attach these as children
* of the macio bus
*/
static int
macio_attach(device_t dev)
{
struct macio_softc *sc;
struct macio_devinfo *dinfo;
phandle_t root;
phandle_t child;
phandle_t subchild;
device_t cdev;
u_int reg[3];
char compat[32];
int error, quirks;
sc = device_get_softc(dev);
root = sc->sc_node = ofw_bus_get_node(dev);
/*
* Locate the device node and it's base address
*/
if (OF_getprop(root, "assigned-addresses",
reg, sizeof(reg)) < (ssize_t)sizeof(reg)) {
return (ENXIO);
}
/* Used later to see if we have to enable the I2S part. */
OF_getprop(root, "compatible", compat, sizeof(compat));
sc->sc_base = reg[2];
sc->sc_size = MACIO_REG_SIZE;
sc->sc_memrid = PCIR_BAR(0);
sc->sc_memr = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
&sc->sc_memrid, RF_ACTIVE);
sc->sc_mem_rman.rm_type = RMAN_ARRAY;
sc->sc_mem_rman.rm_descr = "MacIO Device Memory";
error = rman_init(&sc->sc_mem_rman);
if (error) {
device_printf(dev, "rman_init() failed. error = %d\n", error);
return (error);
}
error = rman_manage_region(&sc->sc_mem_rman, 0, sc->sc_size);
if (error) {
device_printf(dev,
"rman_manage_region() failed. error = %d\n", error);
return (error);
}
/*
* Iterate through the sub-devices
*/
for (child = OF_child(root); child != 0; child = OF_peer(child)) {
dinfo = malloc(sizeof(*dinfo), M_MACIO, M_WAITOK | M_ZERO);
if (ofw_bus_gen_setup_devinfo(&dinfo->mdi_obdinfo, child) !=
0) {
free(dinfo, M_MACIO);
continue;
}
quirks = macio_get_quirks(dinfo->mdi_obdinfo.obd_name);
if ((quirks & MACIO_QUIRK_IGNORE) != 0) {
ofw_bus_gen_destroy_devinfo(&dinfo->mdi_obdinfo);
free(dinfo, M_MACIO);
continue;
}
resource_list_init(&dinfo->mdi_resources);
dinfo->mdi_ninterrupts = 0;
macio_add_intr(child, dinfo);
if ((quirks & MACIO_QUIRK_USE_CHILD_REG) != 0)
macio_add_reg(OF_child(child), dinfo);
else
macio_add_reg(child, dinfo);
if ((quirks & MACIO_QUIRK_CHILD_HAS_INTR) != 0)
for (subchild = OF_child(child); subchild != 0;
subchild = OF_peer(subchild))
macio_add_intr(subchild, dinfo);
cdev = device_add_child(dev, NULL, -1);
if (cdev == NULL) {
device_printf(dev, "<%s>: device_add_child failed\n",
dinfo->mdi_obdinfo.obd_name);
resource_list_free(&dinfo->mdi_resources);
ofw_bus_gen_destroy_devinfo(&dinfo->mdi_obdinfo);
free(dinfo, M_MACIO);
continue;
}
device_set_ivars(cdev, dinfo);
/* Set FCRs to enable some devices */
if (sc->sc_memr == NULL)
continue;
if (strcmp(ofw_bus_get_name(cdev), "bmac") == 0 ||
(ofw_bus_get_compat(cdev) != NULL &&
strcmp(ofw_bus_get_compat(cdev), "bmac+") == 0)) {
uint32_t fcr;
fcr = bus_read_4(sc->sc_memr, HEATHROW_FCR);
fcr |= FCR_ENET_ENABLE & ~FCR_ENET_RESET;
bus_write_4(sc->sc_memr, HEATHROW_FCR, fcr);
DELAY(50000);
fcr |= FCR_ENET_RESET;
bus_write_4(sc->sc_memr, HEATHROW_FCR, fcr);
DELAY(50000);
fcr &= ~FCR_ENET_RESET;
bus_write_4(sc->sc_memr, HEATHROW_FCR, fcr);
DELAY(50000);
bus_write_4(sc->sc_memr, HEATHROW_FCR, fcr);
}
/*
* Make sure the I2S0 and the I2S0_CLK are enabled.
* On certain G5's they are not.
*/
if ((strcmp(ofw_bus_get_name(cdev), "i2s") == 0) &&
(strcmp(compat, "K2-Keylargo") == 0)) {
uint32_t fcr1;
fcr1 = bus_read_4(sc->sc_memr, KEYLARGO_FCR1);
fcr1 |= FCR1_I2S0_CLK_ENABLE | FCR1_I2S0_ENABLE;
bus_write_4(sc->sc_memr, KEYLARGO_FCR1, fcr1);
}
}
return (bus_generic_attach(dev));
}
static int
macio_print_child(device_t dev, device_t child)
{
struct macio_devinfo *dinfo;
struct resource_list *rl;
int retval = 0;
dinfo = device_get_ivars(child);
rl = &dinfo->mdi_resources;
retval += bus_print_child_header(dev, child);
retval += resource_list_print_type(rl, "mem", SYS_RES_MEMORY, "%#jx");
retval += resource_list_print_type(rl, "irq", SYS_RES_IRQ, "%jd");
retval += bus_print_child_footer(dev, child);
return (retval);
}
static void
macio_probe_nomatch(device_t dev, device_t child)
{
struct macio_devinfo *dinfo;
struct resource_list *rl;
const char *type;
if (bootverbose) {
dinfo = device_get_ivars(child);
rl = &dinfo->mdi_resources;
if ((type = ofw_bus_get_type(child)) == NULL)
type = "(unknown)";
device_printf(dev, "<%s, %s>", type, ofw_bus_get_name(child));
resource_list_print_type(rl, "mem", SYS_RES_MEMORY, "%#jx");
resource_list_print_type(rl, "irq", SYS_RES_IRQ, "%jd");
printf(" (no driver attached)\n");
}
}
static struct resource *
macio_alloc_resource(device_t bus, device_t child, int type, int *rid,
rman_res_t start, rman_res_t end, rman_res_t count,
u_int flags)
{
struct macio_softc *sc;
int needactivate;
struct resource *rv;
struct rman *rm;
u_long adjstart, adjend, adjcount;
struct macio_devinfo *dinfo;
struct resource_list_entry *rle;
sc = device_get_softc(bus);
dinfo = device_get_ivars(child);
needactivate = flags & RF_ACTIVE;
flags &= ~RF_ACTIVE;
switch (type) {
case SYS_RES_MEMORY:
case SYS_RES_IOPORT:
rle = resource_list_find(&dinfo->mdi_resources, SYS_RES_MEMORY,
*rid);
if (rle == NULL) {
device_printf(bus, "no rle for %s memory %d\n",
device_get_nameunit(child), *rid);
return (NULL);
}
if (start < rle->start)
adjstart = rle->start;
else if (start > rle->end)
adjstart = rle->end;
else
adjstart = start;
if (end < rle->start)
adjend = rle->start;
else if (end > rle->end)
adjend = rle->end;
else
adjend = end;
adjcount = adjend - adjstart;
rm = &sc->sc_mem_rman;
break;
case SYS_RES_IRQ:
/* Check for passthrough from subattachments like macgpio */
if (device_get_parent(child) != bus)
return BUS_ALLOC_RESOURCE(device_get_parent(bus), child,
type, rid, start, end, count, flags);
rle = resource_list_find(&dinfo->mdi_resources, SYS_RES_IRQ,
*rid);
if (rle == NULL) {
if (dinfo->mdi_ninterrupts >= 6) {
device_printf(bus,
"%s has more than 6 interrupts\n",
device_get_nameunit(child));
return (NULL);
}
resource_list_add(&dinfo->mdi_resources, SYS_RES_IRQ,
dinfo->mdi_ninterrupts, start, start, 1);
dinfo->mdi_interrupts[dinfo->mdi_ninterrupts] = start;
dinfo->mdi_ninterrupts++;
}
return (resource_list_alloc(&dinfo->mdi_resources, bus, child,
type, rid, start, end, count, flags));
default:
device_printf(bus, "unknown resource request from %s\n",
device_get_nameunit(child));
return (NULL);
}
rv = rman_reserve_resource(rm, adjstart, adjend, adjcount, flags,
child);
if (rv == NULL) {
device_printf(bus,
"failed to reserve resource %#lx - %#lx (%#lx) for %s\n",
adjstart, adjend, adjcount, device_get_nameunit(child));
return (NULL);
}
rman_set_rid(rv, *rid);
if (needactivate) {
if (bus_activate_resource(child, type, *rid, rv) != 0) {
device_printf(bus,
"failed to activate resource for %s\n",
device_get_nameunit(child));
rman_release_resource(rv);
return (NULL);
}
}
return (rv);
}
static int
macio_release_resource(device_t bus, device_t child, int type, int rid,
struct resource *res)
{
if (rman_get_flags(res) & RF_ACTIVE) {
int error = bus_deactivate_resource(child, type, rid, res);
if (error)
return error;
}
return (rman_release_resource(res));
}
static int
macio_activate_resource(device_t bus, device_t child, int type, int rid,
struct resource *res)
{
struct macio_softc *sc;
void *p;
sc = device_get_softc(bus);
if (type == SYS_RES_IRQ)
return (bus_activate_resource(bus, type, rid, res));
if ((type == SYS_RES_MEMORY) || (type == SYS_RES_IOPORT)) {
p = pmap_mapdev((vm_offset_t)rman_get_start(res) + sc->sc_base,
(vm_size_t)rman_get_size(res));
if (p == NULL)
return (ENOMEM);
rman_set_virtual(res, p);
rman_set_bustag(res, &bs_le_tag);
rman_set_bushandle(res, (u_long)p);
}
return (rman_activate_resource(res));
}
static int
macio_deactivate_resource(device_t bus, device_t child, int type, int rid,
struct resource *res)
{
/*
* If this is a memory resource, unmap it.
*/
if ((type == SYS_RES_MEMORY) || (type == SYS_RES_IOPORT)) {
u_int32_t psize;
psize = rman_get_size(res);
pmap_unmapdev((vm_offset_t)rman_get_virtual(res), psize);
}
return (rman_deactivate_resource(res));
}
static struct resource_list *
macio_get_resource_list (device_t dev, device_t child)
{
struct macio_devinfo *dinfo;
dinfo = device_get_ivars(child);
return (&dinfo->mdi_resources);
}
static const struct ofw_bus_devinfo *
macio_get_devinfo(device_t dev, device_t child)
{
struct macio_devinfo *dinfo;
dinfo = device_get_ivars(child);
return (&dinfo->mdi_obdinfo);
}
int
macio_enable_wireless(device_t dev, bool enable)
{
struct macio_softc *sc = device_get_softc(dev);
uint32_t x;
if (enable) {
x = bus_read_4(sc->sc_memr, KEYLARGO_FCR2);
x |= 0x4;
bus_write_4(sc->sc_memr, KEYLARGO_FCR2, x);
/* Enable card slot. */
bus_write_1(sc->sc_memr, KEYLARGO_GPIO_BASE + 0x0f, 5);
DELAY(1000);
bus_write_1(sc->sc_memr, KEYLARGO_GPIO_BASE + 0x0f, 4);
DELAY(1000);
x = bus_read_4(sc->sc_memr, KEYLARGO_FCR2);
x &= ~0x80000000;
bus_write_4(sc->sc_memr, KEYLARGO_FCR2, x);
/* out8(gpio + 0x10, 4); */
bus_write_1(sc->sc_memr, KEYLARGO_EXTINT_GPIO_REG_BASE + 0x0b, 0);
bus_write_1(sc->sc_memr, KEYLARGO_EXTINT_GPIO_REG_BASE + 0x0a, 0x28);
bus_write_1(sc->sc_memr, KEYLARGO_EXTINT_GPIO_REG_BASE + 0x0d, 0x28);
bus_write_1(sc->sc_memr, KEYLARGO_GPIO_BASE + 0x0d, 0x28);
bus_write_1(sc->sc_memr, KEYLARGO_GPIO_BASE + 0x0e, 0x28);
bus_write_4(sc->sc_memr, 0x1c000, 0);
/* Initialize the card. */
bus_write_4(sc->sc_memr, 0x1a3e0, 0x41);
x = bus_read_4(sc->sc_memr, KEYLARGO_FCR2);
x |= 0x80000000;
bus_write_4(sc->sc_memr, KEYLARGO_FCR2, x);
} else {
x = bus_read_4(sc->sc_memr, KEYLARGO_FCR2);
x &= ~0x4;
bus_write_4(sc->sc_memr, KEYLARGO_FCR2, x);
/* out8(gpio + 0x10, 0); */
}
return (0);
}
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